Local privilege escalation via heap overflow
Published Aug 11, 2026 · Updated Aug 25, 2026
Heap-based buffer overflow in Windows Remote Access Connection Manager on affected Windows and Windows Server releases allows local users to gain SYSTEM privileges. Microsoft's public advisory identifies the bug class and component but does not disclose the vulnerable function, input, or code path that overruns heap memory. Exploitation requires code execution on the host with low privileges already obtained, and the published impact is local privilege escalation rather than remote compromise.
Summary
What happened
Heap-based buffer overflow in Windows Remote Access Connection Manager on affected Windows and Windows Server releases allows local users to gain SYSTEM privileges. Microsoft's public advisory identifies the bug class and component but does not disclose the vulnerable function, input, or code path that overruns heap memory. Exploitation requires code execution on the host with low privileges already obtained, and the published impact is local privilege escalation rather than remote compromise.
The record
- CVE
- CVE-2026-62783
- Published
- Aug 11, 2026
- Updated
- Aug 25, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-122, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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